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On this day in 1960 the USA launched the first ever communications satellite, it was a large metallic balloon called Echo 1 (although it's creators nicked named it Satelloon).
Echo 1 is what is know as a Passivve Communication Satellite, which means it just reflects the signals. In effect the satellite was like a giant mirror ball orbiting the earth that people could bounce signals off.
You can find out more about Echo 1 at NASA's website here
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